product has been thoroughly inspected by Patton's qualified technicians. If any questions or ..... at the computer end o
USER MANUAL MODEL 1080A Universal Synchronous & Asynchronous Short Range Modem
Pa r t# 0 7 M 1 0 8 0 A Rev. E Revised 7/2/12 CERTIFIED
An ISO-9001Certified Company
SALES OFFICE (301) 975-1000 TECHNICAL SUPPORT (301) 975-1007
CONTENTS 1.0 1.1 1.2 1.3
Warranty Information ................................................................. Radio and TV Interference............................................................ CE Notice...................................................................................... Service..........................................................................................
2.0 2.1 2.2
General Information.................................................................... 6 Features........................................................................................ 6 Description.................................................................................... 6
3.0 3.1 3.2
Configuration Overview ............................................................. 7 Configuration Switches ................................................................. 7 Configuration Switch Set “S1”....................................................... 8 Switches S1-1 through S1-4: Data Rate Setting .......................... 8 Switches S1-5 and S1-6: Clock Source........................................ 9 Switch S1-7: Asynchronous/Synchronous Mode.......................... 9 Switch S1-8: Carrier Control Method.......................................... 10 Configuration Switch Set “S2”..................................................... 10 Switches S2-1 and S2-2: Word Length ...................................... 11 Switch S2-3: Extended Signaling Rate....................................... 11 Switches S2-4 and S2-5: RTS/CTS Delay ................................. 11 Switch S2-6: V.54 Loopback Test Enable .................................. 12 Switch S2-7: 2-Wire/4-Wire Mode Selection .............................. 12 Configuration Switch Set “S3”..................................................... 12 Switches S3-1 & S3-2: Input Impedance.................................... 12 Switch S3-4: Mode Selection...................................................... 13 Switch S3-5: RS-232 Initiation of Local Loopback Test.............. 13 Switch S3-6: RS-232 Initiation of Remote Loopback Test.......... 14 Switches S3-7 and S3-8: Anti-stream Control ............................ 14
3.3
3.4
4.0 4.1
4.2
4.3 4.4 5.0 5.1
5.2 5.3
4 4 4 5
Installation................................................................................. Two-wire Installation ................................................................... Two-Wire Cable Connection Via RJ-45...................................... Two-Wire Cable Connection Via Terminal Blocks...................... Four-wire Installation .................................................................. Four-Wire Cable Connection Via RJ-45 ..................................... Four-Wire Cable Connection Via Terminal Blocks ..................... Four-wire, Multipoint Installation ................................................. Multipoint Twisted Pair Connection ............................................ RS-232 Connection ....................................................................
15 15 16 17 17 18 19 19 20 21
Operation................................................................................... LED Status Monitors ................................................................... The “TD” and “RD” Indicators ..................................................... The “RTS” and “CD” Indicators................................................... The “Test” Indicator .................................................................... The “Error” Indicators ................................................................. Anti-streaming Error Indicator..................................................... Power-up ....................................................................................
22 22 22 22 22 23 24 24
2
5.4
5.5
V.54 Test Modes......................................................................... Local Analog Loopback (LAL) .................................................... Remote Digital Loopback (RDL)................................................. Using the V.52 BER Test Independently .................................... Power-down................................................................................
25 25 25 26 26
A A.1 A.2 A.3 A.4 A.5 A.6 A.7 A.8 A.9 A.10 A.11 A.12 A.13 A.14 A.15 A.16
Specifications ........................................................................... 27 Transmission Format ................................................................... 27 Interface ...................................................................................... 27 Transmission Line ....................................................................... 27 Data Rates .................................................................................. 27 Clocking ...................................................................................... 27 Controls ...................................................................................... 27 Applications ................................................................................ 27 Indicators .................................................................................... 27 RTS Anti-stream Timer ................................................................ 27 Diagnostics ................................................................................. 28 Transformer Isolation .................................................................. 28 Surge Protection ......................................................................... 28 Temperature ............................................................................... 28 Humidity ...................................................................................... 28 Dimensions ................................................................................. 28 Power Input (US) ......................................................................... 28
B Factory Replacement Parts and Accessories........................ 29 C Cable Recommendations......................................................... 30 D Interface Pin Assignment......................................................... 31 E Patton Model 1080A Series Block Diagram............................ 32
3
1.0 WARRANTY INFORMATION Patton Electronics warrants all Model 1080A Series components to be free from defects, and will—at our option—repair or replace the product should it fail within one year from the first date of the shipment. This warranty is limited to defects in workmanship or materials, and does not cover customer damage, abuse or unauthorized modification. If this product fails or does not performs as warranted, your sole recourse shall be repair or replacement as described above. Under no condition shall Patton Electronics be liable for any damages incurred by the use of this product. These damages include, but are not limited to, the following: lost profits, lost savings and incidental or consequential damages arising from the use of or inability to use this product. Patton Electronics specifically disclaims all other warranties, expressed or implied, and the installation or use of this product shall be deemed an acceptance of these terms by the user. Note
Conformity documents of all Patton products can be viewed online at www.patton.com under the appropriate product page.
1.1 RADIO AND TV INTERFERENCE The Model 1080A Series generates and uses radio frequency energy, and if not installed and used properly—that is, in strict accordance with the manufacturer’s instructions—may cause interference to radio and television reception. The Model 1080A Series has been tested and found to comply with the limits for a Class A computing device in accordance with specifications in Subpart B of Part 15 of FCC rules, which are designed to provide reasonable protection from such interference in a commercial installation. However, there is no guarantee that interference will not occur in a particular installation. If the Model 1080A Series does cause interference to radio or television reception, which can be determined by disconnecting the RS-232 interface, the user is encouraged to try to correct the interference by one or more of the following measures: moving the computing equipment away from the receiver, re-orienting the receiving antenna and/or plugging the receiving equipment into a different AC outlet (such that the computing equipment and receiver are on different branches). 1.2 CE NOTICE The CE symbol on your Patton Electronics equipment indicates that it is in compliance with the Electromagnetic Compatibility (EMC) directive and the Low Voltage Directive (LVD) of the European Union (EU). A Certificate of Compliance is available by contacting Technical Support.
4
1.3 SERVICE All warranty and non-warranty repairs must be returned freight prepaid and insured to Patton Electronics. All returns must have a Return Materials Authorization number on the outside of the shipping container. This number may be obtained from Patton Electronics Technical Services at: • Tel: +1 (301) 975-1007 • Email:
[email protected] • URL: http://www.patton.com Note
Packages received without an RMA number will not be accepted.
Technical support is available from 8 AM to 5 PM EST (8:00 to 17:00 UTC-5), Monday through Friday.
5
2.0 GENERAL INFORMATION Thank you for your purchase of this Patton Electronics product. This product has been thoroughly inspected by Patton's qualified technicians. If any questions or problems arise during installation or use of this product, please do not hesitate to contact Patton Electronics Technical Support at (301) 975-1007. 2.1 FEATURES • Synchronous or asynchronous operation • Supports data rates up to 57.6 kbps • Two-wire/half duplex or four-wire/full or half duplex • V.52 & V.54 test modes • Automatic equalization & gain control • Anti-streaming timer • Distances up to 20 miles (32 km) • Point-to-point or multipoint • Internal, external or received loopback clocking • Hardware and software flow control support • Built-in transformer isolation & high speed surge protection • External AC power • Bi-color LED indicators • Detects broken or inferior cable by lighting error LED 2.2 DESCRIPTION The Model 1080A Series Universal Short Range Modem operates 2wire (half duplex) or 4-wire (full or half duplex), in synchronous or asynchronous modes, over unconditioned telephone lines. The Model 1080A supports bit rates up to 57.6 kbps. The 1080A operates in synchronous mode between the local and remote modems; when connected to an asynchronous RS-232 device, the Model 1080A Series SRM converts the asynchronous data to synchronous data. The Model 1080A Series has several features to enhance overall performance: automatic equalization, automatic gain control, anti-streaming timer, transformer isolation to guard against data loss due to ground potential differences, and Silicon Avalanche Diode surge protection to guard against data line transients. 6
The Model 1080A Series features V.52 compliant bit error rate pattern tests and two V.54 test modes: local analog loopback and remote digital loopback. The operator at the local end may test both local and remote modems, plus the line, in the digital loopback mode. Both RDL and LAL modes can be controlled by a manual switch or via the V.24/RS-232 interface. 3.0 CONFIGURATION OVERVIEW The Model 1080A Series is fairly simple to install and is ruggedly designed for excellent reliability: just set it and forget it. The following instructions will help you set up and install the Model 1080A properly. 3.1 CONFIGURATION SWITCHES The Model 1080A Series uses a unique set of 24 external mini DIP switches that allow configuration to an extremely wide range of applications. These 24 DIP switches are grouped into three eight-switch sets, and are externally accessible from the underside of the unit (see Figure 1). Since all configuration DIP switches are externally accessible, there is no need to open the case for configuration. The configuration switches allow you to select data rates, clocking methods, V.52 & V.54 tests, word lengths, extended signaling rates, async. or sync. mode, 2- or 4-wire operation, anti-stream control and input impedance. The drawings, text and tables on the following pages describe all switch locations, positions and functions.
FRONT
ON ON
1
S1
2
3
4
5
6
7
8
2
3
4
5
6
7
8
S2
2
3
4
5
6
7
8
S3
ON
1
ON
1
OFF
REAR Figure 1. Underside of Model 1080A Series, showing location of DIP switches
7
Each Model 1080A Series SRM has three sets of eight switches, yielding 24 total DIP switches. The three sets will be referred to as S1, S2 and S3. As Figure 2 shows, the orientation of all DIP switches is the same with respect to “ON” and “OFF” positions.
ON
ON
1
2
3
4
5
6
7
8 OFF
Figure 2. Close-up of DIP switches showing “ON” and “OFF” positions
3.2 CONFIGURATION SWITCH SET “S1” The DIP switches on S1 set data rate, clock source, async./sync. mode and carrier control method. The default settings are summarized in Table 1. Table 1: Model 1080A S1 Summary
Position
Function
Factory Default
S1-1
Data Rate
On
S1-2
Data Rate
Off
S1-3
Data Rate
Off
S1-4
Data Rate
On
S1-5
Clock Source
On
S1-6
Clock Source
On
S1-7
Async./Sync.
On
Async.
S1-8
Carrier Control
Off
Constantly On
}
9,600 bps (1080A) or 16,000 bps (1080A-64)
}
Internal
Switches S1-1 through S1-4: Data Rate Setting Switches S1-1 through S1-4 are set in combination to determine the asynchronous and synchronous data rate for the Model 1080A.
8
Shown in the tables below are DIP Switch settings for Model 1080A. Table 2: Model 1080A Data Rate Settings
S1-1
S1-2
S1-3
S1-4
Setting
On Off On Off On Off On Off On Off On Off
On On Off Off On On Off Off On On On On
On On On On Off Off Off Off On On Off Off
On On On On On On On On Off Off Off Off
1.2 kbps 1.8 kbps 2.4 kbps 3.6 kbps 4.8 kbps 7.2 kbps 9.6 kbps 14.4 kbps 19.2 kbps 28.8 kbps 38.4 kbps 57.6 kbps
Switches S1-5 and S1-6: Clock Source Switches S1-5 and S1-6 are set in combination to determine the transmit clock source for the Model 1080A Series. S1-5
S1-6
Setting
On Off On
On On Off
Internal transmit clock Receive recover clock External transmit clock
Switch S1-7: Asynchronous/Synchronous Mode The setting for switch S1-7 determines whether the Model 1080A Series is in asynchronous or synchronous operating mode. S1-7
Setting
On Off
Asynchronous Synchronous
9
Switch S1-8: Carrier Control Method The setting for switch S1-8 determines whether the carrier is “constantly on” or “controlled by RTS”. This setting allows for operation in switched carrier, multipoint and/or hardware handshaking applications. S1-8
Setting
Off On
Constantly on Controlled by RTS
3.3 CONFIGURATION SWITCH SET “S2” The DIP switches on S2 set word length, extended signaling rate, RTS/CTS delay, V.52 and V.54 diagnostic test and 2- and 4-wire operation. Table 3: S2 Summary
Position
Function
Factory Default
S2-1
Word Length
Off
S2-2
Word Length
Off
S2-3
Extended Signaling Rate
S2-4
RTS/CTS Delay
On
S2-5
RTS/CTS Delay
On
}
10 bits
Off -2.5% to 1%
}
7 ms
S2-6
V.52/V.54 Tests
Off Normal Operation
S2-7
2-Wire/4-Wire
Off
S2-8
Not Used
N/A
10
(4-Wire)
Switches S2-1 and S2-2: Word Length Switches S2-1 and S2-2 are set in combination to determine the word length for asynchronous data. S2-1
S2-2
Setting
Off On Off On
On On Off Off
8 bits 9 bits 10 bits 11 bits
Switch S2-3: Extended Signaling Rate The setting for switch S2-3 determines the range of variability the Model 1080A Series “looks for” in asynchronous data rates (i.e., the actual variance from a given frequency level the Model 1080A Series will tolerate). S2-3
Setting
Off On
-2.5% to +1% -2.5% to +2.3%
Switches S2-4 and S2-5: RTS/CTS Delay The combined settings for switches S2-4 and S2-5 determine the amount of delay between the time the unit “sees” RTS and when it sends CTS. Options are no delay, 7 ms and 53 ms.
S2-4
S2-5
Setting
On Off On Off
On On Off Off
7 ms 53 ms No delay No delay
11
Switch S2-6: V.54 Loopback Test Enable To reset the V.54 circuit, set switch S2-6 to the “ON” position, then back to the “OFF” position. S2-6
Setting
Off On
V.54 Normal Operation V.54 Testing Disabled
Switch S2-7: 2-Wire/4-Wire Mode Selection The setting for switch S2-7 determines whether the Model 1080A Series is operating in 2-wire or 4-wire mode. S2-7
Setting
Off On
4-wire (full or half duplex) 2-wire (half duplex only)
3.4 CONFIGURATION SWITCH SET “S3” The DIP switches on S3 set the anti-stream control, local loopback enable, remote loopback enable and receive (input) impedance levels for the Model 1080A Series. Factory default positions of Switch S3 are shown in Table 4. Table 4: S3 Summary
Position
Function
Factory Default
S3-1
Input Impedance
On
S3-2
Input Impedance
Off
S3-3
Not yet assigned
n/a
S3-4
Mode Selection
On
Point to Point
S3-5
Local Loopback
Off
Disabled Disabled
S3-6
Remote Loopback
Off
S3-7
Anti-stream Control
Off
S3-8
Anti-stream Control
Off
}
}
200 Ohms
Disabled
Switches S3-1 & S3-2: Input Impedance The setting for Switches S3-1 and S3-2 determines the 1080A Series’ input impedance. This allows you to choose the optimum impedance setting for your application. In long distance applications the impedance of the cable must match the impedance of the load (or resistor) of the Model 1080A Series unit. Thicker gauge cables requires a lower ohm 12
setting, while a thinner gauge cable should receive a higher ohm setting. If you are using higher speeds you will need a lower ohm setting, and a higher ohm setting for the slower speeds. Refer to Table 5 for assistance in selecting a setting. S3-1
S3-2
Setting
On On Off Off
On Off On Off
130 ohms 200 ohms 320 ohms High impedance (minimum 2k¾)
Table 5: S3-1, S3-2 Selection Table for Model 1080A
Gauge of
Data Rates, kb/s
Cable
1.2 1.8 2.4 3.6 4.8 7.2 9.6 14.4 19.2 28.8 38.4 57.6
19AWG/.9mm 320 320 200 200 200 200 200 130 130 130 130 130 22AWG/.6mm 320 320 320 200 200 200 200 200 130 130 130 130 24AWG/.5mm 320 320 320 320 200 200 200 200 200 130 130 130 26AWG/.4mm 320 320 320 320 320 200 200 200 200 200 130 130
Switch S3-4: Mode Selection The setting for switch S3-4 allows the user to choose the appropriate setting for point-to-point or multipoint applications. S3-4
Setting
On On Off
Point-to-point Multipoint application as “Master” Multipoint application as “Slave”
Switch S3-5: RS-232 Initiation of Local Loopback Test The setting for switch S3-5 determines whether or not the Model 1080A Series’ local analog loopback test can be initiated by raising pin 18 on the RS-232 interface. S3-5
Setting
On Off
RS-232 initiation enabled RS-232 initiation disabled
13
Switch S3-6: RS-232 Initiation of Remote Loopback Test The setting for switch S3-6 determines whether or not the Model 1080A Series’ remote digital loopback test can be initiated by raising pin 21 on the RS-232 interface. S3-6
Setting
On Off
RS-232 initiation enabled RS-232 initiation disabled
Switches S3-7 and S3-8: Anti-stream Control Switches S3-7 and S3-8 are set in combination to determine the time out period for the Model 1080A Series’ anti-stream control timer. S3-7
S3-8
Setting
Off Off On On
Off On Off On
Disabled 12.5 seconds 50.0 seconds 12.5 seconds
14
4.0 INSTALLATION The Model 1080A Series operates in four twisted pair topologies: 2wire/point-to-point, 2-wire/multipoint, 4-wire/point-to-point, and 4wire/multipoint. In each of these topologies, the twisted pair wire must be 19 - 26 AWG "dry", unconditioned metallic wire (see Appendix C for wire recommendations). Dial-up analog circuits, such as those used with a standard Hayes-type modem, are not acceptable. The twisted pair may be shielded or unshielded. Both types yield favorable results. The Model 1080A Series offers two methods of twisted pair connection: RJ-45 jack and terminal blocks. Figure 3 shows the location of these interfaces on the rear panel of the Model 1080A Series. Connect the wire to each Model 1080A Series as described in the instructions that follow the illustration. The “+” and “-” indicators are for reference only. The Model 1080A Series is not sensitive to polarity.
Made In the USA
RX+ RX- GND TX- TX+
12V, 2A
RS-232 Interface (Female)
Line
Figure 3. Rear view of Model 1080A Series - AC Power
Made In the USA
Power + -
RX+ RX- GND TX- TX+
RS-232 Interface (Female)
Line
Figure 4. Rear view of Model 1080A Series - DC Power
4.1 TWO-WIRE INSTALLATION When communicating over a single twisted pair circuit, the Model 1080A Series operates half duplex: that is, it transmits in only one direction at a time. This method of operation is effective for both point-to-point and multipoint applications. In single-pair point-to-point applications, you will need a pair of Model 1080As for each circuit—one at each end of the single pair wire. In single-pair multipoint applications you will need three or more Model 1080A Series units. These can be connected using a star topology, although a daisy chain topology is usually used. 15
Two-Wire Cable Connection Via RJ-45 1. The RJ-45 jack on a Model 1080A Series Short Range Modem is prewired for a standard TELCO wiring environment. To be sure you have the right wiring, use the table below as a guide. RJ-45 1 2 3 4 5 6 7 8
Signal -----------------------------------------------------------------------------------------------------------------------------------------
NC GND† RCV XMT XMT RCV GND NC
† Connection to ground is optional
2. Proper wiring of pairs between the two modems is as follows: Signal XMT XMT
Pin#
Color*
4 5
Green Red
-----------------
Color
Pin#
Green Red
4 5
*Standard color codes—yours may be different
3. AT&T standard modular color codes:
1 - Blue 2 - Orange 3 - Black 4 - Red 5 - Green 6 - Yellow 7 - Brown 8 - Slate
16
Signal XMT XMT
Two-Wire Cable Connection Via Terminal Blocks If you are not going to use the modular jacks, follow the instructions below. 1. Locate the terminal block on the back of the unit. It should look like the following diagram:
RX+ RX- GND TX- TX+
Note
The “+” and “-” indicators are for reference only. The Model 1080A Series is not sensitive to polarity.
2. Connect one wire of the pair to a Transmit lug (TX+ or TX-) on both the local and remote Model 1080A. 3. Connect the other wire of the pair to the other Transmit lug on both the local and remote Model 1080A. 4. If there is a shield around the telephone cable, it may be connected to GND on the terminal block. We recommend connecting the shield at the computer end only to avoid ground loops. A ground wire is not necessary for proper operation of these units. 5. When you finish connecting the telephone line to units at both ends, it should look like the following diagram:
XMT XMT GND
To Shield (Optional)
XMT XMT GND
}
One Pair
4.2 FOUR-WIRE INSTALLATION When communicating over a two twisted pair circuit, the Model Series can operate full or half duplex, point-to-point or multipoint. In two pair point-to-point applications, you will need a pair of Model 1080As for each circuit—one at each end of the single pair wire. In two pair multipoint applications you will need three or more Model 1080A Series units. These can be connected using a star topology, although a daisy chain topology is usually used.
17
Four-Wire Cable Connection Via RJ-45 1. The RJ-45 jack on a Model 1080A Short Range Modem is prewired for a standard TELCO wiring environment. To be sure you have the right wiring, use the table below as a guide. RJ-45 1 2 3 4 5 6 7 8
Signal -----------------------------------------------------------------------------------------------------------------------------------------
NC GND† RCV XMT XMT RCV GND NC
†Connection to ground is optional
2. Proper crossing of pairs between the two modems is as follows: Signal
Pin#
Color*
GND† RCV XMT XMT RCV GND
2 3 4 5 6 7
Orange Black Red Green Yellow Brown
Color -------------------------------------------------
Brown Green Yellow Black Red Orange
Pin# 7 5 6 3 4 2
*Standard color codes—yours may be different †Connection to ground is optional
3. AT&T standard modular color codes:
1 - Blue 2 - Orange 3 - Black 4 - Red 5 - Green 6 - Yellow 7 - Brown 8 - Slate
18
Signal GND XMT RCV RCV XMT GND
Four-Wire Cable Connection Via Terminal Blocks If you are not going to use the modular jacks then follow the instructions below. 1. Locate the terminal block on the back of the unit. It should look like the following diagram:
RX+ RX- GND TX- TX+
* The “+” and “-” indicators are for reference only. The Model 1080A Series is not sensitive to polarity.
2. Connect one pair of wires in the telephone cable to the Transmit lugs (TX+ and TX-) on the terminal block. 3. Connect the other pair of wires in the telephone cable to the Receive lugs (RX+ and RX-) on the terminal block. 4. If there is a shield around the telephone cable, it may be connected to "G" on the terminal block. We recommend connecting the shield at the computer end only to avoid ground loops. A ground wire is not necessary for proper operation of these units. 5. When you finish connecting the telephone line to units at both ends, it should look like the following diagram:
XMT XMT G RCV RCV
To Shield (Optional)
RCV RCV G XMT XMT
}
One Pair
}
One Pair
4.3 FOUR-WIRE, MULTIPOINT INSTALLATION Multipoint operation involves the connection of several terminals to one host port. In such an application, one local Model 1080A is used as a master unit, and it is connected to several remote Model 1080As that are acting as slaves. Up to 25 Model 1080A Series slaves may be connected to one host Model 1080A Series master SRM, provided that the computing hardware and software support that many terminal drops. In a multipoint environment the master Model 1080A transmits continually. Initiation of two-way communication is carrier-controlled by each “slave” Model 1080A Series unit. 19
To facilitate multipoint communication, the master Model 1080A should have its carrier control DIP switch set to “constantly ON” (S1-8=OFF). Each slave Model 1080A Series unit should have its carrier control DIP switch set to “controlled by RTS” (S1-8=ON). Figure 5 illustrates a typical Model 1080A Series multipoint application.
Figure 5. Typical multipoint set-up
Multipoint Twisted Pair Connection The Model 1080A Series supports multipoint applications using a star topology. Maximum distance between the units will vary based upon the number of drops, data rate, wire gauge, etc. Call Patton Technical Support for specific distance estimates. The diagrams below show how to wire the one-pair and two-pair cables properly for a Model star topology. Note that the ground connection is not needed.
20
HOST
FIRST SLAVE
XMT
SECOND SLAVE
RCV RCV
XMT
RCV RCV
RCV
XMT XMT
RCV
XMT XMT
HOST
FIRST SLAVE
XMT
SECOND SLAVE
XMT XMT
XMT
XMT XMT
4.4 RS-232 CONNECTION Connect the synchronous or asynchronous output of your RS-232 device to the DB-25 interface on the rear panel of the Model 1080A Series. Note
The Model 1080A Series is wired to connect to a DTE. If your RS-232 output device is DCE, call Patton Technical Support at: (301) 975-1007; http://www.patton.com; or
[email protected] for specific installation instructions.
21
5.0 OPERATION Once you have configured each Model 1080A Series unit properly and connected the twisted pair and RS-232 cables (see Section 4.0), you are ready to operate the units. This section describes reading the LED status monitors, powering-up and using the built-in V.52 and V.54 test modes. 5.1 LED STATUS MONITORS The Model 1080A Series features six front panel status LEDs that indicate the condition of the modem and communication link. Figure 6 shows the front panel location of each LED. Following Figure 6 is a description of each LED’s function.
Model 1080 Universal Short Range Modem
TD
RD
RTS
CD
Error
V.54 Test Modes Test 511 511E
Remote Normal Local
Figure 6. Front view of Model 1080A Series
The “TD” and “RD” Indicators The “TD” and “RD” indicators blink red and green with data activity. Red indicates a low RS-232 logic level, green indicates a high RS-232 logic level. Note
RS-232 devices idle in a low state, so the LED will glow red if the connections are correct and the RS-232 device is in an idle state.
The “RTS” and “CD” Indicators The “RTS” and “CD” indicators are bi-color and will glow red for a “low” signal or green for a “high” signal. RTS lights for an incoming signal on RS-232 pin 4. CD lights for an incoming signal on the line side, and the resulting output signal on RS-232 pin 8. The “Test” Indicator The green “Test” LED indicates that V.52 or V.54 tests are running.
22
The “Error” Indicators The “Error” indicator LED has three functions: 1. When the 1080A Series unit is in test mode (green “Test” LED is lit), the error LED glows red when bit errors occur. 2. When not in test mode (green “Test” LED is off), the error LED is used to indicate an RTS streaming condition. (See Section 5.2) for information on the anti-streaming circuitry. 3. The “Error” LED is also used to detect line quality, such: —
The improper use of flat (non-twisted pair) cable to connect the modems.
—
One or more broken wire in the 4 wire twisted pair cable.
—
The use of low quality twisted pair cable to connect the modems.
—
Broken or corroded connector.
Note
In detecting line quality the “Error” LED indicator is designed for 4 wire twisted pair cable only, and may not function properly with two wire cable.
Setting Up The “Error” LED To Test Cable Quality If there is any question as to the quality of your line we recommend the following test: 1. Disconnect both local and remote modems from their RS-232 interface. Make sure “TD”, “RD” and “RTS” LEDs are lit red. 2. Set input impedance of both modems to 200¾. (S3-1 “On”, S3-2 “Off”). 3. For Model 1080A, set data rate on both modems for 9.6 kbps. 4. On local modem set “Carrier Constantly On”. (S1-8 “Off”) 5. Set remote modem to RTS control (S1-8, “On”). 6. Place both front panel toggle switches to neutral position. (Test Led will not light) 7. Connect both modems to the 4 wire twisted pair cable. Reading The Test
23
1. If line quality is good, “Error” LED on local modem will not light and “CD” LED will be red. On remote modem “Error” LED will not light and “CD” LED will light green. 2. If flat cable is used or parts of the line are flat cable, “Error” LED on local modem will light red and “CD” LED will light green. On remote modem “Error” LED will not light and “CD” LED will light green. 3. If one wire from the 4 wire twisted pair is broken “Error” LED will light red and “CD” LED will light green on at least one modem. Note
We cannot guarantee accurate detection if small pieces of flat cable are present in the line beyond 1500ft of the local modem.
5.2 ANTI-STREAMING ERROR INDICATOR When not in test mode (green “Test” LED is off), the front panel “Error” LED is used to indicate a streaming error. When the Model 1080A Series’ anti-streaming circuitry is enabled, the RTS signal from the DTE is timer controlled. The timer begins to count when the DTE raises RTS. If the time period that RTS remains high exceeds the preset time out period, the antistream circuit will force RTS low. The “Error” LED will light red, indicating a streaming condition (RTS continually on). This feature prevents a malfunctioning terminal from tying-up a computer port in a multi-drop or polling environment. When the DTE drops RTS, the anti-streaming timer is automatically reset and the front panel “Error” LED turns off. The time out period is DIP switch selectable for 12.5 or 50 seconds. 5.3 POWER-UP Apply AC power to the Model 1080A Series by plugging the separate AC power adapter first into the rear panel of the Model 1080A, and then into an acceptable AC power outlet. There is no power switch on the Model 1080A; and the remote/normal/loopback switch should be set to “normal”. When the local and remote Model 1080As are both powered up, and passing data normally, the following LED conditions will exist: • TD & RD = flashing red and green • RTS & DCD = green • TEST = off
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5.4 V.54 TEST MODES The Model Series offers two V.54 test modes to evaluate the condition of the modems and the communication link. These tests can be activated physically from the front panel, or via the RS-232 interface Note
V.54 test modes are available for point-to-point applications only.
Local Analog Loopback (LAL) The Local Analog Loopback (LAL) test checks the operation of the local Model 1080A Series unit, and is performed separately on each unit. Any data sent to the local Model 1080A in this test mode will be echoed (returned) back to the user device. For example, characters typed on the keyboard of a terminal will appear on the terminal screen. To perform a LAL test, follow these steps: 1. Activate LAL. This may be done in one of two ways: First, by moving the front panel toggle switch DOWN to "Local". Second, by raising pin 18 on the RS-232 interface (Note: Make sure DIP switch S2-6 is OFF, and DIP switch S3-5 is ON). Once LAL is activated, the Model 1080A Series’ transmit output is connected to its own receiver. The "test" LED should be lit. 2. Verify that the data terminal equipment is operating properly and can be used for a test. If a fault is indicated, call a technician or replace the unit. 3. Perform a BER (bit error rate) test on each unit. If the BER test equipment indicates no faults, but the data terminal indicates a fault, follow the manufacturer's checkout procedures for the data terminal. Also, check the RS-232 interface cable between the terminal and the Model 1080A. Remote Digital Loopback (RDL) The Remote Digital Loopback (RDL) test checks the performance of both the local and remote Model 1080As, and the communication link between them. Any characters sent to the remote 1080A in this test mode will be returned back to the originating device. For example, characters typed on the keyboard of the local terminal will appear on the local terminal screen after having been passed to the remote Model 1080A and looped back. To perform an RDL test, follow these steps: 1. Activate RDL. This may be done in two ways: First, by moving the front panel toggle switch UP to "Remote". Second, by raising pin 21 on the RS-232 interface. 25
Note
Make sure DIP switch S3-6 is ON; and DIP switch S2-6 is OFF.
2. Perform a BER (bit error rate) test on the system. 3. If the BER test equipment indicates a fault, and the Local Analog Loopback test was successful for both Model 1080A Series units, you may have a problem with the twisted pair line between the modems. You should then test the twisted pair line for proper connections and continuity. Using the V.52 BER Test Independently The V.52 BER test can be used independently of the V.54 loopback tests. This requires two operators: one to initiate and monitor the test at the local 1080A, and one at the remote 1080A. To use the V.52 BER test by itself, both operators should simultaneously follow these steps: 1. Locate the “511/511E” toggle switch on the front panel of the unit and move it UP. This activates the V.52 BER test mode and transmits a “511” test pattern to the other unit. If any errors are present, the receiving modem's red “ERROR” LED will blink sporadically. Note
For this test to function, the “511” switch on both 1080A Series units must be on.
2. If the test indicates no errors are present, move the V.52 toggle switch DOWN, activating the “511/E” test with periodic errors present. If the test is working properly, the receiving modem’s red “ERROR” LED will blink regularly. A successful “511/E” test will confirm that the link is in place, and that the Model 1080A Series’ built-in “511” generator and detector are working properly. 5.5 POWER-DOWN Turn off the Model 1080A Series by simply unplugging the AC or DC power source from the wall. There is no power switch.
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APPENDIX A SPECIFICATIONS A.1 TRANSMISSION FORMAT Synchronous or asynchronous, 2-wire/half duplex, or 4-wire/full or half duplex A.2 INTERFACE RS-232 (CCITT V.24) connection via DB-25 female; twisted pair connection via RJ-45 or terminal block A.3 TRANSMISSION LINE 2 or 4-wire UTP, 19 - 24 AWG A.4 DATA RATES Synchronous or asynchronous at 1.2, 1.8, 2.4, 3.6, 4.8, 7.2, 9.6, 14.4, 19.2, 28.8, 38.4, and 57.6 kbps—switch selectable A.5 CLOCKING Internal, external or receive recover A.6 CONTROLS Carrier constantly “ON” or “controlled by RTS”; RTS/CTS delay set to no delay, 7 or 53 ms A.7 APPLICATIONS Point-to-point or multi-point A.8 INDICATORS Bi-color LED indicators for TD, RD, RTS & DCD; single LED indicators for Test and Error A.9 RTS ANTI-STREAM TIMER 12.5 sec., 50 sec., or disabled (switch selectable); tolerance: +50%, -0%
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A.10 DIAGNOSTICS V.52 compliant bit error rate pattern (511/511E pattern) generator and detector with error injection mode; V.54 compliant—Local Analog Loopback and Remote Digital Loopback, activated by front panel switch or via RS-232 interface A.11 TRANSFORMER ISOLATION 1500 V RMS A.12 SURGE PROTECTION Immune to IEC-801-5 Level 2, 1kV A.13 TEMPERATURE 32–122°F (0–50°C) A.14 HUMIDITY 0–95%, non-condensing A.15 DIMENSIONS 6.2W x 4.2H x 1.5L in. (15.7W x 10.7H x 3.8L cm) A.16 POWER INPUT (US) 12, 24, or 48 VDC AC
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APPENDIX B FACTORY REPLACEMENT PARTS AND ACCESSORIES Patton Model #
Description
PS-03671H1-002 12-132 12-131 12-130 12-129 07M1080A
AC/DC Universal Wall Mount Adapter - 12V, 2A AUS Plug UK Plug EU Plug NA Plug Model 1080A Series User Manual
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APPENDIX C CABLE RECOMMENDATIONS All Patton Electronics Company Short Range Modems are tested to the distances published in our Catalogs and Specification Sheets on twistedpair cable with the following characteristics: Wire Gauge
Capacitance
Resistance
19 AWG(.9mm) 22 AWG(.6mm) 24 AWG(.5mm) 26 AWG(.4mm)
83nF/mi or 15.72 pF/ft. 83nF/mi or 15.72 pF/ft. 83nF/mi or 15.72 pF/ft. 83nF/mi or 15.72 pF/ft.
.0163¾/ft. .0326¾/ft. .05165¾/ft. .08235¾/ft.
We fully expect that the Short Range Modems will operate on lines with specifications different from those tested, but to reduce the potential difficulties in the field, one should ensure that the cable being used has similar or better characteristics (lower capacitance or lower resistance). Wire with capacitance of 20pF/ft. or less is suitable for all our Short Range Modems however, distances may vary from those published in our catalog. Resistance will also affect distance but not functionality. Wire should be 26 AWG (.4mm) or larger (smaller AWG#). Patton products are designed to withstand normal environmental noise and conditions however, other environmental factors too numerous to discuss in this format may affect proper operation of the SRM’s. Selection of the proper SRM for an application is critical to maintaining Customer Satisfaction and should be taken seriously. Certain models are better suited for particular applications and environments than others. Model 1080A Distance Table in miles (km) Data Rate (bps) 57,600 38,400 28,800 19,200 14,400 9,600 7,200 4,800 3,600 2,400 1,800 1,200
19 (.9) 12.0(19.3) 13.0(20.9) 14.0(22.5) 16.0(25.8) 17.0(27.4) 18.5(29.8) 19.0(30.6) 19.5(31.4) 20.0(32.2) 20.5(33.0) 20.5(33.0) 20.0(32.2)
AWG Wire Gauge (mm) 22 (.6) 24 (.5) 7.0(11.2) 5.3(8.5) 7.5(12.1) 6.2(10.0) 8.0(12.9) 6.6(10.6) 8.5(13.7) 7.0(11.3) 11.0(17.7) 9.2(14.9) 13.0(20.9) 10.4(16.7) 13.5(21.7) 10.9(17.5) 14.0(22.5) 11.3(18.2) 14.5(23.3) 11.5(18.5) 15.0(24.2) 11.6(18.7) 15.0(24.2) 11.5(18.5) 15.0(24.2) 11.4(18.4)
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26 (.4) 4.0(6.4) 4.2(6.8) 4.6(7.4) 5.1(8.2) 6.5(10.5) 7.5(12.1) 8.0(12.9) 8.8(14.2) 8.8(14.2) 9.0(14.5) 8.9(14.3) 8.9(14.3)
APPENDIX D INTERFACE PIN ASSIGNMENT RS-232 Female, D-Sub 25 Connector (DCE Orientation) DIRECTION
STANDARD RS-232C/V.24 “DCE” SETTING
To 1080A
Analog Loop - 18
To 1080A To 1080A
Data Term. Ready (DTR) - 20 Digital Loop - 21
From 1080A
1- (FG) Frame Ground 2- (TD) Transmit Data 3- (RD) Receive Data 4- (RTS) Request to Send 5- (CTS) Clear to Send 6- (DSR) Data Set Ready 7- (SG) Signal Ground 8- (DCD) Data Carrier Detect
Test Mode - 25
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DIRECTION
To 1080A From 1080A To 1080A From 1080A From 1080A From 1080A
APPENDIX E PATTON MODEL 1080A SERIES BLOCK DIAGRAM
Copyright © 1998, 2012. Patton Electronics Company All Rights Reserved. 32
